"Ballistic trajectory" nghĩa là gì?

Photo by SpaceX on Unsplash

"Ballistic trajectory" -> nghĩa là đường đi của vật thể không có động cơ (như tên lửa) nhờ tác động của trọng lực hay ma sát khí quyển, bề mặt của vật thể này không tạo ra lực nâng đủ để thay đổi hướng bay. 

Ví dụ
"Most likely, these are missiles (tên lửa) that flew on a ballistic trajectory. It is clear that there is aftermath. The exact type of missiles is still being established... They flew from the northern direction. I’d like to note that we have no effective defense against ballistic missiles,” Ignat said.

Air Force spokesperson Yuriy Ihnat said Russia’s missiles had likely been fired along a high, looping ballistic trajectory from the north, which would explain why the air raid siren (còi báo hiệu) did not sound.

According to the Federation of American Scientists, a ballistic missile is one that has a ballistic trajectory over most of its flight path. What that means is that once the missile burns up the fuel that propels (đẩy đi) it, the missile keeps moving, the same way that a bullet does after it's been fired out of a gun.

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